@interface _TtCC10Foundation21NSKeyValueObservationP33_6DA0945A07226B3278459E9368612FF46Helper : NSObject {
    void /* unknown type, empty encoding */ weakObject;
    void /* unknown type, empty encoding */ unsafeUnretainedObject;
    void /* unknown type, empty encoding */ lock;
    void /* unknown type, empty encoding */ path;
    void /* unknown type, empty encoding */ callback;
}

- (id)init;
- (void)dealloc;
- (void).cxx_destruct;
- (void)__NS_swiftOverlay_isInternalObservationHelper;
- (void)_swizzle_me_observeValueForKeyPath:(id)a0 of:(id)a1 change:(id)a2 context:(void *)a3;

@end